Sadly, "Murano" is almost becoming a generic term these days for Art Glass. But I have also admired some Chinese glass (from a distance), but having said that there's some awful stuff as well. Mind you, I suppose that's the same for other glassmakers and the Chinese shouldn't be singled out.
EDIT: Meant to say - Rosie, not sure if a campaign towards eBay would work, as there is sooooo much glass out there that's mis-described. Perhaps it would be far better that GMB is promoted so people can ask their own questions?